<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <div id='test'>
    <p v-text='msg'></p>
    <p v-upper-text='msg'></p>
    <p v-lower-text='msg'></p>
  </div>
  <script src="../js/vue.js"></script>
  <script>
    Vue.directive('upper-text',function(el,binding){
      el.textContent = binding.vaule.toUpperCase()
    })
    new Vue({
      el:'#test',
      data:{
        msg:'Nba I love this Game!'
      },

    })
  </script>
</body>
</html>